Improvement in brick-presses



A. J.; KNtSELY.

Improvement in Brick-Presses.

Patented Sep. 17, 1872.

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UNITED STATES PATENT OEEro ABRAHAM J KNISELY, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN BRICK-PRESSES.

Specication forming part of Letters Patent No. 131,353, dated September17, 1872; antedated September To all whom it may concern:

Be it known that I, ABRAHAM J. KNISELY,

. of Chicago, in the county of Cook and State of Illinois, have inventeda new and useful Im- `provement in Brick-Press; and I do declare thisspecification, in which- Figure 1 is a vertical longitudinal section ofmy improved press. Fig. 2 is a cross-section of the same; and Fig. 3 isa cross-section of a modification thereof.

Similar letters of reference indicate corresponding parts in the severalfigures.

The nature of this invention relates to an improvement in that class ofpresses which are employed for the purpose of repressing green bricks inthe process of manufacturing pressed or face 7 brick, whereby the saidbricks, after pressing, shall be uniform in size, even if they may varyin weight and density; and it consists in the peculiar construction ofthe press and/the arrangement thereinV of the pressingplunger, as morefully hereinafter set forth.

, In the drawing, A represents the green brick in the mold B, which ispreferably of cast metal, having the desired capacity and being closedat the top by a sliding-plate or cover C, sliding under brackets, D,projecting from the back of the press, one at each side of the mold, inthe bottom of which is a cavity or recess, A', to receive thepressing-plunger E, whose stem F plays through a guide-socket formed inthe bottom-of the mold. G is a lever pivoted to the end of the stem; atI it is pivoted to a stationary fulcrum-pin or stud projecting from astationary part of the pressframe. At H the lever is connected with anyactuating mechanism designed for hand or power. The green brick beingplaced flatwise in the mold and the cover slid over the mold, power isapplied on the lever, which forces the plunger into the large face ofthe brick, which, already filling the mold-space before the pressingcommenced, is thereby expanded therein on every side, giving it anaccurate outline and sharp edges, as well as rendering it dense andsolidified. The bricks being first molded to the full capacity of themold in this press, and the plunger having a lesser area than the broadface of the bricks, the latter must necessarily be uniform in size,although they may vary in weight and density. After pressing thepressure may be slackened to remove the cover, when the brick may beforced out of the press. In Fig. 3 is shown a modification; in this casethe mold is open, with two or more inwardly-turned flanges, on whichrests a follower, B', through which the stem F plays. The follower formsthe bottom of the mold, 4and may be actuated by any convenient means toeject the pressed brick 5 the advantage of which is that the pressure toforce out the brick is brought thereon about, or rather as far as theedges, which are thereby preserved intact and the brick kept `fromwarping.

What I claim as my inventionfand desire to secure by Letters Patent, is-

1. In oombinationwith the mold B, recessed substantially as described,thejpiston E, constructed and operating as and for the purposedescribed.

2. The mold B, in combination with the piston E and expellingplungerfasand for the purpose described.

' ABRAHAM J. KNISELY.

Witnesses:

WM. H. LoTz, JULIUS WELGKE.

